Hi, I've just ordered the Phantom Vision a couple of days ago and am thinking about what accessories to get. Going to get myself a case, and one thing will be to maximize uptime in the field, so I need a good solution for power. I own a 12v 75AH leisure battery that I use for example for my camera when I leave it in the field to take timelapses. I have 3x car plug sockets attached to it to power various stuff. Could I use these plugs to charge the Phantom Vision's battery? Any idea how many batteries I would need to have permanent uptime? (That is, until the leisure battery runs dry.) Is there a place where I can find cheaper third party batteries for the Vision yet and what other things do I need to safely charge the Vision's battery of my leisure battery? Any help is appreciated!